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Isles of Scilly Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on December 8th, 2025 6:06 AM).
Dec 8th
Safe
Dec 9th
Safe
Dec 10th
Safe
Last Frost Date (Spring)
The average last frost date for Isles of Scilly is February 15th. We recommend waiting until March 1st before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Isles of Scilly is February 1st.
Growing Season
Based on historical data, the growing season in Isles of Scilly is approximately 14 days long.
Isles of Scilly Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Isles of Scilly Monthly Gardening Guide
January
In January, you can sow Garden Cress outside, sow Mustard outside, start Sage indoors, sow California Poppy outside, and sow Alfalfa outside.
February
In February, you can sow Runner Bean outside, sow Gladiolus outside, sow Anise outside, sow Fenugreek outside, and sow Hollyhock outside.
March
In March, you can sow Butterfly Pea outside, sow Okra outside, sow Watermelon outside, sow Mung Bean outside, and sow Sesame outside.
December
In December, you can start Cauliflower indoors, start Black Eyed Susan indoors, start French Lavender indoors, start Artichoke indoors, and start Impatiens indoors.